Borehole radar trial in Borehole 7A, Sellafield, Cumbria, UKFunded under: FP2-RADWASTOM 4C
A trial borehole radar survey was conducted at Sellafield with the objectives of establishing the feasibility of the technique and determining the range and resolution of the system within the Borrowdale volcanic group (BVG). The data acquired with the 22 MHz system provided no information on geological features in the BVG. However, a range of 5 to 10 metres was achieved with the 60 MHz omnidirectional system for 50 % of the BVG, whilst a range of approximately five metres was obtained with the 60 MHz directional system with resolutions of approximately one metre. Further analysis showed that the radar range was limited by the relatively low resistivities of the formations and the conductivity of the borehole fluid seemed to be of limited importance. The estimates of radar range made on the basis of the correlations suggested that the technique would only be effective over short intervals of other boreholes at Sellafield and that it would not be possible to undertake a cross-hole radar survey.
Bibliographic Reference: EUR 15974 EN (1995) 298 pp., FS, ECU 36.50
ISBN: ISBN 92-826-9459-3
Record Number: 199411583 / Last updated on: 1995-03-21
Original language: en
Available languages: en